Which amendment granted women the right to vote?

The Nineteenth Amendment is the correct answer because it specifically states that the right to vote cannot be denied or abridged on account of sex. Ratified in 1920, this amendment formally granted women the legal right to vote in the United States, marking a significant milestone in the women's suffrage movement. Before its ratification, numerous efforts and activism by women were directed toward obtaining voting rights, and the Nineteenth Amendment was the culmination of those struggles. Other amendments mentioned do not pertain to voting rights for women. The Eighteenth Amendment, for example, is related to the prohibition of alcohol, while the Twentieth and Twenty-First Amendments deal with terms of office and the repeal of prohibition, respectively. Therefore, the Nineteenth Amendment stands out as the pivotal change in extending voting rights to women.